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Finding the Fourth Proportional to 624.96, 936.84 and 556.56

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Solution

The fourth proportional to 624.96, 936.84 and 556.56 is: 834.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.96 : 936.84 = 556.56 : x
  2. Step 2: Convert to fraction form
    624.96/936.84 = 556.56/x
  3. Step 3: Cross multiply
    624.96x = 936.84 × 556.56
  4. Step 4: Simplify right side
    624.96x = 521,407.67
  5. Step 5: Solve for x
    x = 521,407.67/624.96
  6. Step 6: Final answer
    x = 834.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.